Results 1 to 10 of about 9,915 (77)

Vizualizing of semi-regular polyhedrons in AutoCAD environment

open access: yesStructural Mechanics of Engineering Constructions and Buildings, 2019
The paper examines the automated formation by the kinematic method of the surfaces of Archimedes' semi-regular polyhedra of three forms: truncated tetrahedron, truncated octahedron and truncated icosahedron.
Viktoryna A. Romanova
doaj   +3 more sources

Modeling and visualizing of the formation of a snub dodecahedron in the AutoCAD system

open access: yesStructural Mechanics of Engineering Constructions and Buildings, 2021
The article is devoted to modeling and visualization of the formation of flat-nosed (snub-nosed) dodecahedron (snub dodecahedron). The purpose of the research is to model the snub dodecahedron (flat-nosed dodecahedron) and visualize the process of its ...
Victoryna A. Romanova   +1 more
doaj   +1 more source

Generation and Frame Characteristics of Predefined Evenly-Distributed Class Centroids for Pattern Classification

open access: yesIEEE Access, 2021
Predefined evenly-distributed class centroids (PEDCC) can be widely used in models and algorithms of pattern classification, such as CNN classifiers, classification autoencoders, clustering, and semi-supervised learning, etc.
Haiping Hu   +3 more
doaj   +1 more source

Visualizing surface formation of semi-regular polyhedra of Archimedes

open access: yesStructural Mechanics of Engineering Constructions and Buildings, 2020
The most common method of forming semi-control polyhedra consists in cutting off angles and ribs of regular polyhedra by planes. The aim of the work - to consider the automated formation of a number of surfaces of semi-regular Archimedean polyhedra based
Viktoryna A. Romanova
doaj   +1 more source

Characteristic polyhedra of singularities without completion -- Part II [PDF]

open access: yes, 2020
Hironaka's characteristic polyhedron is an important combinatorial object reflecting the local nature of a singularity. We prove that it can be determined without passing to the completion if the local ring is a G-ring and if additionally either it is ...
Cossart, Vincent, Schober, Bernd
core   +3 more sources

Cubic Polyhedra [PDF]

open access: yes, 2002
A cubic polyhedron is a polyhedral surface whose edges are exactly all the edges of the cubic lattice. Every such polyhedron is a discrete minimal surface, and it appears that many (but not all) of them can be relaxed to smooth minimal surfaces (under an
Goodman-Strauss, Chaim, Sullivan, John M
core   +1 more source

Geodesic flow on three dimensional ellipsoids with equal semi-axes [PDF]

open access: yes, 2006
Following on from our previous study of the geodesic flow on three dimensional ellipsoid with equal middle semi-axes, here we study the remaining cases: Ellipsoids with two sets of equal semi-axes with $SO(2) \times SO(2)$ symmetry, ellipsoids with equal
Davison, Chris M., Dullin, Holger R.
core   +3 more sources

Hyperbolic semi-adequate links [PDF]

open access: yes, 2014
We provide a diagrammatic criterion for semi-adequate links to be hyperbolic. We also give a conjectural description of the satellite structures of semi-adequate links.
David Futer   +3 more
core   +2 more sources

UNFOLDED REGULAR AND SEMI-REGULAR POLYHEDRA

open access: yesJournal of Industrial Design and Engineering Graphics, 2015
This paper proposes a presentation unfolding regular and semi-regular polyhedra. Regular polyhedra are convex polyhedra whose faces are regular and equal polygons, with the same number of sides, and whose polyhedral angles are also regular and equal ...
Elena Ionita   +2 more
doaj   +4 more sources

Explicit rank bounds for cyclic covers [PDF]

open access: yes, 2015
Let $M$ be a closed, orientable hyperbolic 3-manifold and $\phi$ a homomorphism of its fundamental group onto $\mathbb{Z}$ that is not induced by a fibration over the circle.
DeBlois, Jason
core   +1 more source

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